Article
  • The Reaction Kinetics of Aromatic Diisocyanates with Polyether in Toluene
  • Lee HJ, Kim K
  • 톨루엔용매계에서 폴리에테르와 방향족 디이소시아네이트의 반응속도론
  • 이현주, 김광
Abstract
The kinetics of spontaneous reaction of 4,4'-diphenyl methane diisocyanate (MDI), and toluene diisocyanate(TDI) with polyoxypropylene glycol(PPG), polytetramethylene ether glycol(PTMG), and glycol propylene(GP) were studied, and the data were treated by a method developed by Baker and Sate. The rate constants, K and K' of aromatic diisocyanate with polyether diol were determined. The reaction of MDI-PTMG system apparently followed second and third order kinetics in good agreement. The reactions of TDI-PTMG system followed these kinetics experimentally but did not follow theoretically. The difference of E'4-E'3 of TDI-PTMG was smaller about 5 times than E'2-E'1 values of MDI-PTMG system.

Polyoxypropylene glycol(PPG), polytetramethylene ether glycol(PTMG), glycolpropylene(GP)과 4,4'-diphenyl methane diisocyanate(MDI), toluene diisocyanate(TDI)의 동시반응 속도론을 연구하였으며, 자료는 Baker와 Sato의 방법에 따라 분석하였다. Polyether diol과 방향족 diisocyanate의 속도상수 K와 K'를 측정하였다. MDI-PTMG계는 2차 및 3차 반응 속도식에 뚜렷하게 일치하였다. TDI-PTMG계의 실험자료는 2차 속도식에 일치하였으나, 이론접근식에는 잘 맞지 않았다. TDI-PTMG계의 E'4-E'3 값은 MDI-PTMGE계의 E'2-E'1 값보다 5배 낮았다.

Keywords: Polyether-diol; Aromatic diisocyanate; Prepolymer; Kinetics

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1998; 22(4): 528-535

    Published online Jul 25, 1998